Modifiable risk factors and the development of psoriatic arthritis in people with psoriasis

BACKGROUND Psoriatic arthritis (PsA) is a progressive and often destructive joint disease affecting approximately 20% of people with psoriasis. OBJECTIVES To investigate associations between obesity, changes in body mass index (BMI), alcohol intake and smoking status and the development of PsA in people with psoriasis. METHODS We undertook a cohort study involving incident cases of psoriasis identified from the U.K. Clinical Practice Research...